Vin ATF story

[nightwalker]

Hey guys! I hope someone can help me. I'm looking for a fic. It's the ATF AU (or another modern cop AU) where Vin is doing his job as a sniper. He doesn't realize he's been shot until they take his vest off (or he takes his own vest off?) That's really all I remember. I'm hoping it'll ring a bell with someone. It's been driving me crazy all day!

Thanks in advance!